Wow Kate, apparently I hit a sore spot with you, I'm sorry, that's really not what I was going for. This is all just an expression of opinions, and I'm not saying anyone else is wrong in their opinions. If someone else feels that uniforms are unnecessary and I believe "retarded" was the term used, that's fine! No problem! I have a differing opinion, however.
As a rebuttal to your points, of course you're not going to retain customers if you're a total jerk to them, no matter what you're wearing. On the flip-side, of course you're going to retain customers if you treat them with respect and let them know how much you truly love your job, no matter what you're wearing. And if you go back and re-read my original post, you'll see that the CFI I wound up choosing to fly with wore shorts, sneakers, and a logo polo shirt.
My point is simply that society has built up the image of the "professional pilot", and that includes the black pants, white shirt, tie (or crossing neck thing for ladies), and epaulets. Think, for a second, like someone who doesn't know any better. I feel like that person is going to feel more confident in their CFI if they fit that image of the "professional pilot". Now, whether a particular CFI actually lives up to that image, that's another story. Both you and Jesse, and I think someone else (I don't feel like re-reading the whole thread) indicated that some of the worst CFI's they've flown with were uniformed. To be honest, I've had some less than positive experience with uniformed CFI's as well. But, we are all experienced people (to varying degrees, I have much less than many here), and therefore we know better.
I guess to make a long story short (I know, too late), my point is not that uniformed CFI's are necessarily better, it seems that most often the reverse is true. My point is that the great unwashed have a perception that uniformed CFI's are more capable, and therefore I can see why some schools require them.